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Braz. j. infect. dis ; 24(1): 7-12, Feb. 2020. tab, graf
Article in English | LILACS | ID: biblio-1089323


ABSTRACT Background: This study aims to explore the epidemiology, clinical profile and strain characteristics of cryptococcosis from 2013 to 2017 in a major teaching hospital in China. Methods: Trends in antifungal drug susceptibility of 217 consecutive non-repetitive cryptococcal isolates collected from patients of an university hospital in China were analyzed between 2013 and 2017. Of those, 98 isolates were conserved for identification by internal transcribed spacer (ITS) sequencing and matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS) system. Multilocus sequence typing (MLST) was used to designate molecular types. Clinical characteristics of the 98 patients with cryptococcosis during the period of 2013-2017 were retrospectively evaluated. Results: There was a trend for gradual increase in the MIC range of fluconazole was from 2013 to 2017. The conserved 98 clinical cryptococcal isolates included 97 C. neoformans and one C. gattii, and 90 (91.8%) isolates belonged to ST5 genotype VNI. Out of the 98 patients with cryptococcosis, 28 (28.6%) were HIV-infected and 32 (32.7%) had no underlying diseases. HIV-infected patients had higher mortality than HIV-uninfected patients (28.6% vs 14.3%, p = 0.147). Conclusions: Most of the patients with cryptococcosis were not HIV-infected in this study, while patients with HIV had a higher mortality. Reduced susceptibility to fluconazole was observed among C. neoformans isolates, most of them belonged to ST5 genotype VNI having an impact on the effective dose of fluconazole.

Humans , Male , Female , Adult , Middle Aged , Cryptococcosis/microbiology , Cryptococcosis/epidemiology , Hospitals, University/statistics & numerical data , Time Factors , Microbial Sensitivity Tests , China/epidemiology , Cross-Sectional Studies , Retrospective Studies , Statistics, Nonparametric , Cryptococcosis/drug therapy , Cryptococcus neoformans/isolation & purification , Cryptococcus neoformans/drug effects , Cryptococcus neoformans/genetics , Cryptococcus gattii/isolation & purification , Cryptococcus gattii/drug effects , Cryptococcus gattii/genetics , Multilocus Sequence Typing , Genotype , Antifungal Agents/therapeutic use
Chinese Medical Journal ; (24): 2859-2866, 2020.
Article in English | WPRIM | ID: wpr-877942


The prevalence of asymptomatic cryptococcal antigenemia (ACA) in human immunodeficiency virus (HIV) infected individuals has been observed to be elevated. The prevalence of ACA ranges from 1.3% to 13%, with different rates of prevalence in various regions of the world. We reviewed studies conducted internationally, and also referred to two established expert consensus guideline documents published in China, and we have concluded that Chinese HIV-infected patients should undergo cryptococcal antigen screening when CD4 T-cell counts fall below 200 cells/μL and that the recommended treatment regimen for these patients follow current World Health Organization guidelines, although it is likely that this recommendation may change in the future. Early screening and optimized preemptive treatment for ACA is likely to help decrease the incidence of cryptococcosis, and is lifesaving. Further studies are warranted to explore issues related to the optimal management of ACA.

AIDS-Related Opportunistic Infections , CD4 Lymphocyte Count , China , Cryptococcosis/epidemiology , Cryptococcus , HIV Infections/complications , Humans , Meningitis, Cryptococcal
Rev. Soc. Bras. Med. Trop ; 52: e20180194, 2019.
Article in English | LILACS | ID: biblio-1041522


Abstract INTRODUCTION Cryptococcosis is the second most frequent cause of opportunistic infections in human immunodeficiency virus (HIV) patients in Colombia. We aimed to determine the prevalence of cryptococcosis in the Colombian department of Atlántico. METHODS An active search for cryptococcosis cases was conducted between 2015 and 2017 in health institutions by distributing surveys to clinicians and characterizing samples phenotypically and genotypically. RESULTS Thirty-eight cryptococcosis cases were identified (81.6% men, 76.3% HIV patients). The calculated annual prevalence was 5.08/1 million inhabitants. Cryptococcus neoformans var. grubii VNI was isolated in 34 cases. CONCLUSIONS These results provide the basis for passive surveillance of cryptococcosis.

Humans , Male , Female , Child , Adolescent , Adult , Young Adult , Cryptococcosis/epidemiology , Phenotype , Prevalence , Colombia/epidemiology , Cryptococcosis/microbiology , Cryptococcus neoformans/isolation & purification , Cryptococcus gattii/isolation & purification , Molecular Typing , Genotype , Middle Aged
Braz. j. microbiol ; 46(4): 1125-1133, Oct.-Dec. 2015. tab
Article in English | LILACS | ID: lil-769665


In this study, we present antifungal susceptibility data of clinical and environmental isolates of Central Indian Cryptococcus neoformans (Serotype A, n = 8 and n = 50 respectively) and Cryptococcus gattii (Serotype B, n = 01 and n = 04 respectively). Susceptibilities to fluconazole, itraconazole and ketoconazole were determined by using NCCLS broth micro-dilution methodology. The total number of resistant strains for fluconazole in case of C. neoformans and C. gattii showed a significant difference by using chi-square test (p < 0.05*), while considering fisher's exact p value was nonsignificant (p > 0.05). However, the total number of resistant strains for itraconazole and ketoconazole was not found statistically significant. A comparison of geometric means of clinical and environmental strains of C. gattii and C. neoformans was not found statistically significant using student ‘t’ test (p value > 0.05 NS). Though less, the antifungal data obtained in this study suggests that primary resistance among environmental and clinical isolates of C. neoformans and C. gattii against tested antifungal was present and C. gattii comparatively was less susceptible than C. neoformans var. grubii isolates to fluconazole than to itraconazole and ketoconazole. A continuous surveillance of antifungal susceptibility of clinical and environmental isolates of C. neoformans and C. gattii is desirable to monitor the emergence of any resistant strains for better management of cryptococcosis patients.

Humans , Antifungal Agents/pharmacology , Cryptococcosis/microbiology , Cryptococcus gattii/drug effects , Cryptococcus neoformans/drug effects , Environmental Microbiology , Cryptococcosis/epidemiology , Cryptococcus gattii/isolation & purification , Cryptococcus neoformans/isolation & purification , Drug Resistance, Fungal , Fluconazole/pharmacology , India/epidemiology , Itraconazole/pharmacology , Ketoconazole/pharmacology , Microbial Sensitivity Tests
Rev. Soc. Bras. Med. Trop ; 48(5): 580-586, Sept.-Oct. 2015. tab, graf
Article in English | LILACS | ID: lil-763328


ABSTRACTINTRODUCTION:Cryptococcosis is an invasive disease acquired by inhalation of infectious propagules from the environment. Currently, compulsory notification of the spread of this disease is not required in Colombia. However, reporting of human immunodeficiency virus (HIV)/acquired immune deficiency syndrome cases to the National Surveillance System has suggested that there is a growing population at risk of contracting cryptococcosis. Few studies have described the occurrence of cryptococcosis in Colombia. Therefore, in this study, we examined the pathology of this disease in Atlántico, Colombia and determined the distributions of Cryptococcus neoformans and Cryptococcus gattii in the environment.METHODS:Clinical samples/isolates were gathered from cases of cryptococcosis previously diagnosed at health institutions in Atlántico, and surveys were completed by clinicians. The environmental study considered 32 sampling points and three tree species, i.e., Quickstick ( Gliricidia sepium ), Almond ( Terminalia catappa ), and Pink trumpet ( Tabebuia rosea ). Environmental and clinical samples/isolates were analyzed for phenotypic and genotypic confirmation.RESULTS:From 1997-2014, 41 cases of cryptococcosis were reported. The mean patient age was 40.5 years (range: 18-63 years); 76% were men, and 78% were HIV positive. Isolation was possible in 38 cases ( C. neoformans , molecular type VNI in 37 cases and C. gattii , molecular type VGI in one case). In 2012-2014, 2,068 environmental samples were analyzed with a positivity of 0.4% ( C. neoformans , molecular type VNI) in Almond and Pink trumpet trees.CONCLUSIONS:Cryptococcus neoformans , molecular type VNI had a higher prevalence than C. gattii and was associated with human exposure and the pathogenesis of cryptococcosis in this geographical region.

Adult , Humans , Male , Middle Aged , Young Adult , Cryptococcosis/epidemiology , Cryptococcus gattii/isolation & purification , Cryptococcus neoformans/isolation & purification , Environmental Microbiology , Colombia/epidemiology , Cryptococcosis/transmission , Genotype , Molecular Typing , Mycological Typing Techniques , Prevalence
Mem. Inst. Oswaldo Cruz ; 109(6): 797-804, 09/09/2014. tab, graf
Article in English | LILACS | ID: lil-723985


Cryptococcosis is reported in adults and is often acquired immune deficiency syndrome (AIDS)-associated; however, its frequency in children is low. Based on the National Survey on Cryptococcosis conducted in Colombia, an epidemiological and clinical analysis was performed on cases of the disease observed in children less than 16 years old between 1993-2010. We found 41 affected children (2.6% prevalence) from the 1,578 surveys received. The country mean annual incidence rate was 0.017 cases/100,000 children under 16 years, while in Norte de Santander the incidence rate was 0.122 cases/100,000 (p < 0.0001). The average age of infected children was 8.4 and 58.5% were male. In 46.3% of cases, a risk factor was not identified, while 24.4% had AIDS. The most frequent clinical manifestations were headache (78.1%), fever (68.8%), nausea and vomiting (65.6%), confusion (50%) and meningeal signs (37.5%). Meningitis was the most frequent clinical presentation (87.8%). Amphotericin B was given to 93.5% of patients as an initial treatment. Positive microbiological identification was accomplished by India ink (94.7%), latex in cerebrospinal fluid (100%) and culture (89.5%). Out of 34 isolates studied, Cryptococcus neoformans var. grubii (VNI 85.3%, VNII 8.8%) was isolated in 94.1% of cases and Cryptococcus gattii (VGII) was isolated in 5.9% of cases. These data are complemented by a literature review, which overall suggests that cryptococcosis in children is an unusual event worldwide.

Adolescent , Child , Child, Preschool , Female , Humans , Infant , Male , Cryptococcosis/epidemiology , Cryptococcus/isolation & purification , Antifungal Agents/therapeutic use , Coinfection , Colombia/epidemiology , Cryptococcosis/diagnosis , Cryptococcosis/drug therapy , Cryptococcus/classification , HIV , HIV Infections/epidemiology , Incidence , Meningitis, Cryptococcal/diagnosis , Meningitis, Cryptococcal/epidemiology , Meningitis, Cryptococcal/virology , Prevalence , Risk Factors
Rio de Janeiro; s.n; 2014. xii,68 p. tab, ilus, mapas.
Thesis in Portuguese | LILACS | ID: lil-762503


A criptococose é causada por duas espécies distintas de leveduras capsuladas da divisão dos basidiomicetos, Cryptococcus neoformans e Cryptococccus gattii, as quais causam infecções invasivas emergentes de significativa letalidade, seja em imunodeprimidos ou imunocompetentes. No Brasil, a criptococose por C. gattii tem caráter endêmico, ocorrendo principalmente em indivíduos HIV negativos. O caráter epidêmico deste agente tem sido evidenciado por surtos em animais, sendo o mais significativo a epidemia ocorrida em Vancouver, Canadá, atingindo humanos e animais desde 1999...

Cryptococcosis is caused by two distinct species of capsulated basidiomycetes yeasts, Cryptococcus neoformans and Cryptococccus gattii, which are responsible for invasive infections with significant lethality, either in immunocompetent or immunocompromised individuals. In Brazil, cryptococcosis by C. gattii is endemic, occurring mainly in HIV negative individuals. The epidemic nature of this agent has been reported by outbreaks in animals and human in Vancouver, Canada, which is the most significant outbreak and started in 1999...

Animals , AIDS-Related Opportunistic Infections , Cryptococcus gattii , Cryptococcosis/classification , Cryptococcosis/epidemiology , Genotype , Multilocus Sequence Typing , Polymerase Chain Reaction , Polymorphism, Restriction Fragment Length
Rev. cuba. med. trop ; 65(1): 78-89, ene.-abr. 2013.
Article in Spanish | LILACS | ID: lil-665680


Introducción: a partir de 1998 en el laboratorio de micología del Instituto Pedro Kourí se observó un incremento del número de aislamientos de Cryptococcus obtenidos de niños seronegativos al VIH con meningoencefalitis. Los reportes de criptococosis infantil a nivel mundial son infrecuentes y generalmente se encuentran asociados al sida. Objetivo: estudiar la criptococosis infantil en Cuba a través de la evaluación integral de 7 casos. Métodos: se realizó un estudio retrospectivo integral, se revisaron las historias clínicas de 7 pacientes pediátricos afectados por criptococosis menigoencefálica y se caracterizaron los aislamientos obtenidos (uno de cada paciente). A estos se les determinó la especie, variedad, serotipo, patogenicidad en un modelo murino y susceptibilidad a la anfotericina B. Resultados: la edad media de los niños fue de 5,8 años, con ligero predominio del sexo femenino (4:3). Los síntomas más frecuentes resultaron la cefalea, fotofobia, fiebre y los vómitos. En 6 pacientes el estudio citoquímico del líquido cefalorraquídeo y el examen imaginológico de cráneo evidenciaron anomalías. El diagnóstico microbiológico se realizó mediante examen directo y cultivo. Todos los aislamientos correspondieron con Cryptococcus neoformans serotipo A y la anfotericina B mostró una concentración mínima inhibitoria menor o igual que 0,125 mg/mL. El 85,7 porciento mostró actividad fenoloxidasa y elevada letalidad en los animales infectados (71,4-100 porciento). Conclusiones: el pronóstico de la meningoencefalitis por Cryptococcus está estrechamente ligado a un diagnóstico precoz. Esta realidad hace que deba tenerse siempre presente, por lo que los datos aportados bien pudieran servir de alerta a los médicos de asistencia

Introduction: since 1998, an increasing number of Cryptococcus isolates obtained from HIV-negative children with meningoencephalitis was observed in the mycology laboratory at Pedro Kourí Institute. The global reports of child cryptococcosis are rare and usually associated with AIDS. Objectives: to study child cryptococosis in Cuba through the comprehensive evaluation of 7 cases. Methods: the clinical histories of seven pediatric patients with cryptococcal meningoencephalitis were examined and the obtained isolates (one per patient) were characterized. The species, variety, serotype, pathogenicity in a mouse model and amphotericin B susceptibility of the isolates were determined. Results: average age of the children was 5.8 years, with a slight female predominance (4:3). The most common symptoms were headache, photophobia, fever and vomiting. The cytochemical study of cerebral spinal fluid and skull imaging test showed abnormalities in 6 patients. The microbiological diagnosis was made through direct examination and culture. All the isolates were from Cryptococcus neoformans serotype A and amphotericin B showed a minimum inhibitory concentration £ 0.125 mg/mL. In the group, 85.7 percent showed phenoloxidase activity and high lethality rate in infected animals (71.4 to 100 percent). Conclusions: the prognosis of cryptococcal meningoencephalitis is closely linked to early diagnosis, therefore, this should be always kept in mind and the provided data from this study may serve as warning to attending physicians

Humans , Male , Female , Child, Preschool , Child , Cryptococcosis/complications , Cryptococcosis/epidemiology , Cryptococcus neoformans , Cryptococcus neoformans/pathogenicity , Retrospective Studies , Microbiological Techniques/methods
Rio de Janeiro; s.n; 2013. xiv,137 p. tab, ilus, graf.
Thesis in Portuguese | LILACS | ID: lil-762504


A criptococose é uma micose sistêmica adquirida pela inalação de basidiosporos ou leveduras desidratadas de Cryptococus neoformans e Cryptococus gattii, estas duas espécies podem causar criptococose oportunista e primária respectivamente. C. neoformans está constituído de tipos moleculares VNI-VNIV e C. gattii de VGI-VGIV que apresentam distribuição geográfica diferenciada, como por exemplo, o tipo VNI é cosmopolita e está associado a AIDS e VGI predominando na Austrália e EUA, o tipo VGII predominando no Brasil e America Latina. Este trabalho tem por objetivo realizar estudo comparado dos tipos moleculares VNI de C. neoformans, VGI e VGII de C. gattii analisando diferentes aspectos tais como: 1- Determinar o perfil da suscetibilidade in vitro da concentração inibitória mínima (CIM) de fluconazol (FLZ), itraconazol (ITZ), 5-fluorocitosina (5FC) e anfotericina B (AMB), isoladamente e de forma combinada de AMB com 5FC e AMB com Voriconazol (VRZ); 2- Determinar CIM pela citometria de fluxo (CMF) frente a FLZ, ITZ e AMB; 3- Definir a concentração mínima letal (CML) de AMB e 5FC, isoladamente e em combinação; 4- Avaliar a ação da melanina frente a 5FC e AMB na forma combinada e isolada de 5FC; 5- Induzir a resistência in vitro para FLZ e padronizar os fluorocromos: acetoximetil - calceína (calceina-AM), acetoximetil - 2’, 7’ -bis-(2-carboxietil)-5-(e -6)- carboxifluoresceína (BCECF-AM), rodamina 123 (Rh123) e iodeto de 3, 3’ –dipentiloxacarbocianina (DiOC5) na CMF para verificar a expressão de bombas de efluxo; 6- Comparar a expressão de bombas de efluxo...

Cryptococcosis is a systemic mycosis acquired by inhalation of dried yeasts or basidiospores of Cryptococus neoformans and Cryptococus gattii, these species can cause cryptococcosis opportunistic and primary respectively. C. neoformans is composed of molecular types VNI - VNIV and C. gattii VGI - VGIV they have different geographical distribution, the VNI type is cosmopolitan and is associated with AIDS, VGI type is predominant in Australia and the USA; while VGII type occurs in Brazil and Latin America. This paper aims to conduct a comparative study of the molecular types VNI C. neoformans and VGI, VGII C. gattii analyzing different aspects such as: 1 – The susceptibility profile in vitro of fluconazole ( FLZ ), itraconazole ( ITZ ), 5 - fluorocytosine ( 5FC ) and amphotericin B ( AMB ) alone and in combination with 5FC and AMB with voriconazole ( VRZ ) 2 – The minimum inhibitory concentration ( MIC ) by flow cytometry ( FCM ) comparing MIC of FLZ, ITZ and AMB with CLSI; 3 - The minimum lethal concentration ( MLC ) of AMB and 5FC, alone and in combination; 4 - The action of melanin against 5FC and AMB alone and combined 5FC, 5 – The induced resistance in vitro to FLZ and standardize the fluorochromes: acetoximetil - calceína (calceina-AM), acetoximetil - 2’, 7’ -bis-(2-carboxietil)-5-(e -6)- carboxifluoresceína (BCECF-AM), rodamina 123 (Rh123) e iodeto de 3, 3’ – dipentiloxacarbocianina (DiOC5) in FCM to verify expression of efflux pumps; 6 - The compare the expression of efflux pumps...

Animals , Cryptococcosis/epidemiology , Cryptococcosis/drug therapy , Cryptococcus gattii/classification , Cryptococcus neoformans/classification , Drug Resistance, Fungal , Cell Separation , Flow Cytometry , Molecular Typing , Mycological Typing Techniques
Biomédica (Bogotá) ; 32(3): 386-398, jul.-set. 2012. ilus, graf, mapas, tab
Article in English | LILACS | ID: lil-663709


Introduction: A survey on cryptococcosis is being conducted regularly in Colombia since 1997. We present hereby the results corresponding to patients diagnosed from 2006 to 2010. Objective: To analyze the data obtained during this period. Materials and methods: Retrospective analysis of the corresponding surveys. Results: A total of 526 surveys originating from 72% of the Colombian political divisions were received during the 5-year period. Most patients (76.6%) were males and 74.9% were 21-50 years old. The most prevalent risk factor was HIV infection (83.5%) with cryptococcosis defining AIDS in 23% of the cases. In the general population the estimated mean annual incidence rate for cryptococcosis was 2.4 x 106 inhabitants while in AIDS patients this rate rose to 3.3 x 103. In 474 surveys stating clinical features, most frequent complaints were headache 84.5%, fever 63.4%, nausea and vomiting 57.5%, mental alterations 46.3%, meningeal signs 33.0%, cough 26.4% and visual alterations 24.5%. Neurocryptococcosis was recorded in 81.8% of the cases. Laboratory diagnosis was based on direct examination, culture and latex in 29.3% cases. From 413 Cryptococcus isolates analyzed, 95.6% were identified as C. neoformans var. grubii, 1% C. neoformans var. neoformans, and 3.4% C. gattii. Treatment was reported for 71.6% of the cases with amphotericin B alone or in combination with fluconazole prescribed in 28%. Conclusions: Surveys done through passive surveillance continue to be sentinel markers for HIV infection and represent a systematic approach to the study of opportunistic problems regularly afflicting AIDS patients since cryptococcosis requires no compulsory notification in Colombia.

Introducción. Desde 1997 se viene realizando un programa nacional de vigilancia sobre la criptococosis en Colombia. Se presentan los resultados correspondientes a los pacientes diagnosticados entre el 2006 y el 2010. Objetivo. Analizar los datos obtenidos durante este periodo. Materiales y métodos. Análisis retrospectivo de las encuestas. Resultados. Durante los cinco años mencionados se recibieron 526 encuestas representativas del 72 % de la división política colombiana. La mayoría de pacientes (76,6 %) eran hombres y 74,9 % estaban entre los 21 y los 50 años. El factor de riesgo prevalente fue la infección por VIH (83,5 %), y la criptococosis definió el sida en 23 % de los casos. La incidencia anual promedio en la población general fue de 2,4 por un millón de habitantes mientras que, en pacientes con sida, aumentó a 3,3 por 1.000. En 474 encuestas se informaron manifestaciones clínicas; las más frecuentes fueron: cefalea (84,5 %), fiebre (63,4 %), náuseas y vómito (57,5 %), alteraciones mentales (46,3 %), signos meníngeos (33 %), tos (26,4 %) y alteraciones visuales (24,5 %). La neurocriptococosis se reportó en 81,8 % de los casos. El diagnóstico se hizo por examen directo, cultivo y antigenemia en 29,3 % de los casos. De 413 aislamientos recuperados, 95,6 % fueron C. neoformans var. grubii, 1 % C. neoformans var. neoformans, y 3,4 % C. gattii. En 71,6 % de los casos para el tratamiento se administró anfotericina B y en 28 % se combinó con fluconazol. Conclusiones. La vigilancia pasiva continúa siendo un marcador centinela para la infección por VIH, y constituye una aproximación sistemática al estudio de infecciones oportunistas en pacientes con sida, debido a que la criptococosis no es de notificación obligatoria en Colombia.

Adolescent , Adult , Aged , Child , Female , Humans , Male , Middle Aged , Young Adult , Cryptococcosis/epidemiology , AIDS-Related Opportunistic Infections/epidemiology , Amphotericin B/administration & dosage , Amphotericin B/therapeutic use , Antifungal Agents/therapeutic use , Antigens, Fungal/blood , Colombia/epidemiology , Cryptococcosis/diagnosis , Cryptococcosis/drug therapy , Cryptococcosis/microbiology , Cryptococcus gattii/immunology , Cryptococcus gattii/isolation & purification , Cryptococcus neoformans/immunology , Cryptococcus neoformans/isolation & purification , Drug Resistance, Multiple, Fungal , Fluconazole/administration & dosage , Fluconazole/therapeutic use , Health Surveys , Incidence , Population Surveillance , Retrospective Studies , Symptom Assessment
Kasmera ; 37(2): 140-147, dic. 2009.
Article in Spanish | LILACS | ID: lil-630934


La criptococosis es una enfermedad oportunista de distribución mundial. Frecuentemente es una infección definitoria de SIDA. El tratamiento antirretroviral ha disminuido su frecuencia. El impacto de esta entidad en Venezuela es desconocido. El objetivo de este trabajo es describir las características más relevantes de la criptococosis en nuestro país. Se revisaron 110 historias clínicas de pacientes hospitalizados con el diagnostico de criptococosis, entre 1994 y 2003, en 6 hospitales. Los datos recolectados incluyeron: características demográficas, clínicas, diagnósticas, terapéuticas y la evolución de los pacientes. Para el análisis se utilizaron los programas SPSS 10.0 y EpiInfo 6.04 (2001). Dentro de los 110 pacientes evaluados se incluyeron 17 protocolos de autopsia. Uno solo de los pacientes tenia 8 años de edad, el resto era mayor de 15 años. 91 eran del sexo masculino y 19 femenino. 91 (82,73 por ciento) tenían SIDA y 19 (17,27 por ciento) eran VIH negativo. En los pacientes con SIDA el valor promedio de CD4+ fue < 200 cel/mm³ y la carga viral era > 30000 copias/mL; 52 (57,14 por ciento) de los casos no tenían otra infección oportunista y 39 (42,86 por ciento) tenían otras condiciones asociadas, tales como tuberculosis (30,97 por ciento), neumocistosis (28,21 por ciento), y toxoplasmosis (20,51 por ciento). En los pacientes VIH negativo, el uso de esteroides (25 por ciento) fue el factor de riesgo predominante. Dos pacientes eran embarazadas. En 107 (57,27 por ciento) se encontró infección del SNC. 12 (13,19 por ciento) de los pacientes con SIDA tenían alteración de pares craneales. Se encontró afectación pulmonar en 4 (3,77 por ciento) pacientes, 1 de ellos con SIDA. La criptococosis fue la enfermedad definitoria de SIDA en el 61,54 por ciento de los casos. 33 (30 por ciento) de los pacientes fallecieron. En la mayoría de los pacientes la criptococosis se asoció a SIDA. A pesar de la eficacia del tratamiento antirretrovial, esta micosis es todavia ...

Cryptococcosis is an opportunistic disease of worldwide distribution. It is frequently an AIDS-defining infection. Antiretroviral treatment has reduced its occurrence. In Venezuela, the impact of this disease is unknown. The aim of this study is to describe the most relevant features of cryptococcosis in our country. 110 clinical records with a diagnosis of cryptococcosis hospitalized between 1994 and 2003 in 6 Venezuelan hospitals were analyzed. Data collected included demographic, clinical, diagnostic, therapeutic and outcome information. SPSS 10.0 software and EpiInfo 6, version 6.04 (2001) were used. 110 patients with cryptococcosis were enrolled, including 17 autopsy protocols. One was 8 years old, the rest were over 15. Nineteen were female and 91 male; 91 (82.73 percent) had AIDS, 19 (17.27 percent) were HIV negative. Among the AIDS patients, average CD4+ count was < 200 cel/mm3 and viral load was > 30000 copies/ml; 52 (57.14 percent) did not have other opportunistic infections or AIDS-related disease, and 39 (42.86 percent) had other associated conditions, such as tuberculosis (30.97 percent), PCP (28.21 percent) and toxoplasmosis (20.51 percent). In HIV negative patients, use of steroids (25 percent) was the predominant risk factor. Two patients were pregnant. 107 (57.27 percent) presented CNS infection; 12 (13.19 percent) with AIDS had cranial nerve alterations. Pulmonary disease was found in 4 (3.77 percent), of which one had AIDS. Cryptococcosis was an AIDS-defining infection in 61.54 percent of cases; 33 (30 percent) of the patients died. In most of the patients, cryptococcosis was associated with AIDS. In spite of the efficacy of antiretroviral treatment, this mycosis is still significant in Venezuela, perhaps due to late HIV infection diagnosis

Humans , Male , Adolescent , Adult , Female , Child , Cryptococcosis/epidemiology , Cryptococcus neoformans/pathogenicity , Meningoencephalitis/pathology , Meningoencephalitis/virology , Acquired Immunodeficiency Syndrome/pathology , Acquired Immunodeficiency Syndrome/virology
Mem. Inst. Oswaldo Cruz ; 103(8): 813-818, Dec. 2008. mapas, tab
Article in English | LILACS | ID: lil-502302


In order to study the infectious agents causing human disseminated cryptococcosis in the state of Pará, North Brazil, 56 isolates of Cryptococcusspp. (54 isolated from cerebral spinal fluid and two from blood cultures) from 43 cases diagnosed between 2003-2007 were analysed. The species were determined through morphological and physiological tests and genotypes were determined by URA5-RFLP and PCR-fingerprinting (wild-type phage M13). The following species and genotypes were identified: Cryptococcus neoformans VNI (28/56, 50 percent), Cryptococcus gattii VGII (25/56, 44.64 percent) and C. gattii VGI (3/56, 5.26 percent). The genotype VNI occurred in 12 out of 14 HIV-positive adults, whereas the genotype VGII occurred in 11 out of 21 HIV-negative adults (p < 0.02, OR = 6.6 IC95 percent 0.98-56.0). All patients less than 12 years old were HIV negative and six cases were caused by the VGII genotype, one by the VGI and one by VNI. Therefore, endemic primary mycosis in HIV-negative individuals, including an unexpectedly high number of children, caused by the VGII genotype deserves further study and suggests the need for surveillance on cryptococcal infection in the state of Pará, Eastern Amazon.

Adult , Child , Female , Humans , Male , Cryptococcosis/epidemiology , Cryptococcus/genetics , Endemic Diseases , Brazil/epidemiology , Cryptococcosis/microbiology , Cryptococcus/classification , Cryptococcus/isolation & purification , DNA, Fungal/analysis , Genotype , Mycological Typing Techniques/methods , Polymerase Chain Reaction , Polymorphism, Restriction Fragment Length
Rev. Inst. Med. Trop. Säo Paulo ; 50(2): 75-78, Mar.-Apr. 2008. graf, tab
Article in English | LILACS | ID: lil-482218


To identify the clinical and epidemiological profile of cryptococcosis diagnosed at the University Hospital of the Federal University of Mato Grosso do Sul, Brazil, medical records of 123 patients admitted from January 1995 to December 2005 were analyzed. One hundred and four cases (84.5 percent) had HIV infection, six (4.9 percent) had other predisposing conditions and 13 (10.6 percent) were immunocompetent. Male patients predominated (68.3 percent) and their age ranged from 19 to 69 years (mean: 35.9). Most patients (73.2 percent) were born and lived lifelong in the state of Mato Grosso do Sul. Involvement of the central nervous system occurred in 103 patients (83.7 percent) and headache and vomiting were the most frequent symptoms. In 77 cases it was possible to identify the Cryptococcus species: 69 (89.6 percent) C. neoformans and eight (10.4 percent) C. gattii. Amphotericin B was the drug of choice for treatment (106/123), followed by fluconazole in 60 percent of cases. The overall lethality rate was 49.6 percent, being 51 percent among the HIV infected patients and 41.2 percent among the non-HIV infected (p > 0.05). Although cryptococcosis exhibited in our region a similar behavior to that described in the literature, the detection of an important rate of immunocompetent individuals and five C. gattii cryptococcosis in HIV-infected patients is noteworthy.

O perfil clínico-epidemiológico de 123 casos de criptococose diagnosticados no Hospital Universitário da Universidade Federal de Mato Grosso do Sul, no período de janeiro de 1995 até dezembro de 2005, foi estudado retrospectivamente. Cento e quatro (84,9 por cento) casos tinham associação com HIV, seis (4,9 por cento) tinham outra condição predisponente e 13 (10,6 por cento) eram imunocompetentes. Houve predomínio do sexo masculino (68,3 por cento) e a idade variou de 19 a 69 anos (média de 35,9 anos). A maioria (73,2 por cento) era natural e procedente de Mato Grosso do Sul. O envolvimento do sistema nervoso central ocorreu em 103 (83,7 por cento) pacientes e os sintomas mais freqüentes foram cefaléia e vômitos. Em 77 casos foi possível identificar a espécie do agente, sendo 69 (89,6 por cento) C. neoformans e oito (10,4 por cento) C. gattii. O antifúngico mais utilizado foi anfotericina B (106/123) seguido de fluconazol em aproximadamente 60 por cento dos casos. A taxa de letalidade foi de 49,6 por cento, sendo 51 por cento entre os pacientes infectados pelo HIV e 41,2 por cento entre os não infectados pelo HIV (p > 0,005). Apesar da criptococose observada em nossa região apresentar comportamento semelhante ao descrito na literatura, chama a atenção a importante taxa da micose em imunocompetentes e cinco casos de infecção por C. gattii em pacientes HIV-positivos.

Adult , Aged , Female , Humans , Male , Middle Aged , AIDS-Related Opportunistic Infections/epidemiology , Cryptococcosis/epidemiology , AIDS-Related Opportunistic Infections/diagnosis , AIDS-Related Opportunistic Infections/drug therapy , Amphotericin B/therapeutic use , Antifungal Agents/therapeutic use , Brazil/epidemiology , Cryptococcosis/diagnosis , Cryptococcosis/drug therapy , Fluconazole/therapeutic use , Retrospective Studies
Biomédica (Bogotá) ; 27(1): 94-109, mar. 2007. mapas, tab, graf
Article in Spanish | LILACS | ID: lil-475390


Introducción. Con el fin de conocer la situación de la criptococosis en Colombia se ha llevado a cabo una encuesta nacional. El presente estudio analiza la información recogida de 1997 a 2005. Materiales y métodos. Se utilizó el formato de encuesta de la Confederación Europea de Micología Médica. Resultados. Se recibieron 931 encuestas de 76 centros. Se identificaron 891 (95,7 por ciento) casos de neurocriptococosis, 27 (2,9 por ciento) de formas pulmonares, cinco (0,5 por ciento) de lesiones cutáneas, dos (0,2 por ciento) de ganglionares, dos (0,2 por ciento) de úlceras orofaríngeas y un caso (0,1 por ciento) de cada una de las siguientes formas clínicas: peritonitis, lesión hepática, celulitis de los miembros inferiores e infección de las vías urinarias. El 82,7 por ciento fueron hombres con predominio de los adultos jóvenes. Sin embargo, se reportaron 25 (2,7 por ciento) niños. La infección por el virus de la inmunodeficiencia humana se encontró en el 78,1 por ciento de los casos. La incidencia promedio anual de criptococosis en la población general fue de 2,4 casos x106, pero en los pacientes con sida se elevó a 3,0 casos x 103. Las manifestaciones clínicas más frecuentes fueron: cefalea (85,2 por ciento), náuseas y vómito (59,1 por ciento), fiebre (59 por ciento), cambios mentales (46,2 por ciento) y signos meníngeos (33,4 por ciento). El examen directo de líquido cefalorraquídeo fue positivo en el 92,8 por ciento de los casos y el hongo se recuperó en el 90,3 por ciento. El antígeno capsular tuvo una positividad del 98,9 por ciento en el líquido cefalorraquídeo y del 93,7 por ciento en el suero. De 788 aislamientos remitidos, 95,9 por ciento fueron Cryptococcus neoformans var. grubii serotipo A, 0,3 por ciento, var. neoformans serotipo D, 3,3 por ciento, C. gattii serotipo B y 0,5 por ciento, C. gattii serotipo C. La mayoría de los pacientes fueron tratados inicialmente con anfotericina B. Conclusión: La criptococosis es una enfermedad cuya incidencia a...

Introduction. A national survey on cryptococcosis has been conducted in Colombia since 1997. The survey data recorded over a 9-year period, 1997 to 2005, was summarized. Materials and methods. The format provided by the European Confederation of Medical Mycology was adapted with the correspondent permission. Results. Over the 9 year period, 931 surveys were received from 76 centers. The associated disease syndromes were as follows: 891 (95.7%) were neurocryptococosis cases, 27 (2.9%) pulmonary disease, 5 (0.5%) cutaneous lesions, 2 (0.2%) ganglionar forms, 2 (0.2%) oropharyngeal lesions and one case (0.1%) each from peritonitis, liver lesion, cellulitis and urinary tract infection. Demographic data indicated 82.7% of the subjects were males, and 59.4% were between 20-39 years old; 25 children less than 16 years old were reported. The prevalent risk factor was HIV infection (78.1%). The mean annual incidence rate of cryptococcosis in the general population was 2.4 X 106 inhabitants, but in AIDS patients the rate rose to one in 3 X 103. The most frequent clinical features were headache (85.2%), nausea and vomiting (59.1%), fever (59.0%), mental changes (46.2%), meningeal signs (33.4%), cough (23.6%) and visual alterations or loss of vision (20.9%). Laboratory data showed that direct examination of cerebrospinal fluid (CSF) was positive in 92.8% cases and Cryptococcus was recovered in 90.3% of the cases. Cryptococcal antigen reactivity was 98.9% in CSF and 93.7% in serum samples. From 788 isolates submitted, 95.9% were C. neoformans var. grubii serotype A, 0.3% var. neoformans serotype D, 3.3% C. gattii serotype B and 0.5% C. gattii serotype C. The majority of patients were treated initially with amphotericin B. Conclusion. Cryptococcosis incidence has increased dramatically in Colombia with the AIDS pandemic and it can be considered as a sentinel marker for HIV infection.

Acquired Immunodeficiency Syndrome , Cryptococcus neoformans , Cryptococcosis/epidemiology , Health Surveys , Morbidity , Mortality
Caracas; s.n; 2007. 257 p. ilus, tab.
Thesis in Spanish | LILACS | ID: lil-551784


En este trabajo, se realizó un estudio clínico-epidemiológico de la criptococosis, de tipo mixto, dividido en 3 secciones: SECCIÓN I: Los pacientes con criptococosis, estudio descriptivo. Se evaluaron 110 historias clínicas cuyo diagnóstico se realizó entre los años de 1994-2003, en 4 centros de referencia asistencial del país. Se tomaron en cuenta caracteres demográficos, clínicos y paraclínicos. Un 82,7 por ciento tenía SIDA y un 17,3 por ciento eran VIH seronegativos. La clínica más frecuentemente observada fue la encefalitis o meningoencefalitis (98,2 por ciento). La mortalidad fue de un 30,00 por ciento, predominantemente en pacientes con SIDA, a razón de 7.3:1. Entre los indicadores de mal pronóstico de la población evaluada, la alteración del estado de conciencia fue la que ejerció el mayor peso. SECCIÓN II: Los aislados de Cryptococcus spp, estudio experimental. Se evaluó la utilidad del medio agar cerebro-corazón con sangre, para el aislamiento de las cepas a partir de las muestras clínicas, entre los años 2001-2003. Se estudiaron un total de 132 cepas de cryptococcus spp, unas aisladas de muestras clínicas y otras conservadas en micotecas en los últimos 10 años. En este trabajo se introdujo la prueba de auxanograma por la técnica de Beijerinck modificada por Araujo, la cual resultó tener una elevada sensibilidad y especificidad. Se comprobó la utilidad del Caldo Urea de Stuart para la realización de la prueba de la ureasa a levaduras de este género. SECCIÓN III: La cepa de crytococcus spp y el paciente, estudio descriptivo. Se evaluó la relación existente entre la variedad de C. neoformans aislado y el patrón genotípico del mismo con repsecto a caracteres demográficos, clínica, paraclínica y evolución, entre otros presentadores por el paciente al cual se le aisló la cepa. Se encontró una diferencia estadísticamente significativa en la asociación entre C. neoformans var gattii y la presencia de alteración de los pares craneales.

Cryptococcosis/epidemiology , Cryptococcus neoformans/immunology , Cryptococcus neoformans/isolation & purification , Mycology , Venezuela
Rev. Soc. Bras. Med. Trop ; 39(3): 255-258, maio-jun. 2006. tab
Article in Portuguese | LILACS | ID: lil-433389


Estudo prospectivo foi realizado no Hospital de Clínicas da Universidade Federal de Uberlândia, entre março de 1998 e novembro de 2003, em 96 pacientes com diagnóstico clínico e laboratorial de criptococose, sendo 81,3 por cento portadores de Aids. Cepas de Cryptococcus neoformans foram obtidas de diferentes amostras, sendo 77 por cento em líquido cefalorraquidiano. A var neoformans foi isolada em 89 casos e a var gattii em 7. A meningoencefalite criptocócica (56,3 por cento dos casos), foi a manifestação clínica mais descrita, seguida da fungemia (13,5 por cento). Entre os fatores de risco, a AIDS (81,3 por cento) foi o mais comumente associado à micose. A pesquisa direta do fungo realizada em 121 amostras demonstrou o microrganismo em 98,3 por cento, com cultura (+) em todas. Dos pacientes, 59,4 por cento foram tratados com anfotericina B ou derivados triazólicos, sendo que 72,9 por cento evoluíram para óbito, em particular os portadores de AIDS (62,5 por cento). Atualmente, a criptococose tem sido diagnosticada com muita freqüência em nosso meio e constitui uma das doenças oportunísticas de maior morbidade e mortalidade nos pacientes com AIDS.

Adult , Aged , Aged, 80 and over , Female , Humans , Male , Middle Aged , AIDS-Related Opportunistic Infections/epidemiology , Antifungal Agents/therapeutic use , Cryptococcosis/epidemiology , Cryptococcus neoformans/classification , Age Distribution , AIDS-Related Opportunistic Infections/drug therapy , AIDS-Related Opportunistic Infections/microbiology , Brazil/epidemiology , Cryptococcosis/drug therapy , Cryptococcosis/microbiology , Incidence , Prospective Studies , Risk Factors , Sex Distribution
São Paulo; s.n; 2006. [226] p. ilus, tab, graf.
Thesis in Portuguese | LILACS | ID: lil-436087


A criptococose é uma infecção oportunista e está associada à uma pobre resposta inflamatória e a uma queda da resposta T dependente. O objetivo desse trabalho foi avaliar parâmetros imunológicos celulares em pacientes com neurocriptococose. O leucograma dos pacientes evidenciou: linfopenia, monocitopenia, eosinopenia e neutropenia. Observou-se linfopenia TCD4+ e TCD8+ . O GXM do soro mostrou correlação com linfoproliferação e expressão de moléculas em leucócitos. As células de pacientes com elevadas quantidades de GXM proliferaram menos para antígenos e adequadamente para o mitógeno. Tendo em vista o que foi observado, os dados sugerem um defeito de sinalização monócito-linfócito, provavelmente provocado pelo açúcar da cápsula do C. neoformans / Cryptococcosis is an opportunistic fungal disease that can be associated to a poor inflammatory response and to a decreased T cell response, the aim of this study was to evaluate cellular immunological parameters in HIV(-) patients with neurocryptococcosis. Patient´s leukogram showed: lymphopenia, monocytopenia, eosinopenia and neutropenia. NCC group presented CD4+ and CD8+ T lymphopenia. The serum GXM correlated with lymphoproliferative response and the expression of molecules on leucocytes. NCC patients’ cells with high GXM levels proliferated less to specific antigens and adequately to mitogen. In summary data suggest a defect in monocyte-lymphocyte communication probably related to the interference of C. neoformans capsular sugar...

Humans , Male , Female , Child , Adolescent , Adult , Middle Aged , AIDS-Related Opportunistic Infections , Cryptococcosis/immunology , Meningitis, Cryptococcal , Lymphocyte Activation , Cryptococcosis/diagnosis , Cryptococcosis/epidemiology , Cryptococcosis/pathology , Cryptococcosis/blood , Flow Cytometry
Rev. argent. microbiol ; 37(4): 189-195, oct.-dic. 2005. tab
Article in Spanish | LILACS | ID: lil-634503


La incidencia de candidemias aumentó aproximadamente en un 500% en hospitales de alta complejidad y se observó un cambio en la distribución de especies del género Candida, con un incremento de las levaduras no Candida albicans. Con el objeto de conocer la distribución de especies asociadas a fungemias por levaduras en Argentina y determinar su sensibilidad a los antifúngicos de uso convencional, se realizó un estudio multicéntrico durante el período abril 1999 a abril 2000. Participaron 36 instituciones del país. Se colectaron 265 aislamientos de levaduras provenientes de hemocultivos, que se identificaron utilizando pruebas morfológicas, fisiológicas y bioquímicas y la determinación de la concentración inhibitoria mínima se realizó en base al estándar del NCCLS. La distribución de especies fue: Candida albicans (40,75%), Candida parapsilosis (28,67%), Candida tropicalis (15,84%), Candida famata (3,77%), Cryptococcus neoformans (3,77%), Candida glabrata (2,64%) y otras (4,53%). La mayoría de los aislamientos fueron sensibles a anfotericina B, fluconazol e itraconazol. La mortalidad asociada a las fungemias por levaduras estudiadas (n=265) fue del 30%, siendo más baja a lo descrito (33-54%) y fue menor en los pacientes que recibieron tratamiento antifúngico (26,3%), que en los no tratados (47%).

The incidence of candidemia has increased approximately 500% in high-complexity hospitals. A change in the spectrum of Candida infections due to species other than Candida albicans has also been detected. Between April 1999 and April 2000 a multicenter study was performed in order to determine the species distribution associated to candidemias in Argentina and the susceptibility profile of the isolates to the current antifungal drugs. Thirty six institutions have participated. All the 265 yeast strains isolated from blood cultures were identified by morphological, physiological, and biochemical tests. The antifungal susceptibility testing of isolates was performed based on the reference NCCLS procedure. The distribution of species was: Candida albicans (40.75%), Candida parapsilosis (28.67%), Candida tropicalis (15.84%), Candida famata (3.77%), Cryptococcus neoformans (3.77%), Candida glabrata (2.64%), and others (4.53%). Most of the isolates were susceptible to amphotericin B, fluconazole and itraconazole. Mortality associated to the fungemia by yeasts episodes (n=265) was 30%, lower than results previously determined (33-54%). The mortality percentage in patients who received antifungal therapy versus patients without treatment was 26.3% and 47%, respectively.

Humans , Fungemia/epidemiology , Yeasts/isolation & purification , Amphotericin B/pharmacology , Amphotericin B/therapeutic use , Antifungal Agents/pharmacology , Antifungal Agents/therapeutic use , Argentina/epidemiology , Candida/classification , Candida/drug effects , Candida/isolation & purification , Candidiasis/drug therapy , Candidiasis/epidemiology , Cryptococcosis/drug therapy , Cryptococcosis/epidemiology , Cryptococcus neoformans/drug effects , Cryptococcus neoformans/isolation & purification , Drug Resistance, Fungal , Fluconazole/pharmacology , Fluconazole/therapeutic use , Fungemia/drug therapy , Fungemia/microbiology , Incidence , Itraconazole/pharmacology , Itraconazole/therapeutic use , Species Specificity , Survival Analysis , Treatment Outcome , Yeasts/drug effects
Thesis in French | AIM | ID: biblio-1277070


I- Objectifs : Face au polymorphisme clinique des differentes pathologies chez malades du SIDA et au veritable probleme de sante publique que ce dernier pose nous nous sommes proposee de decrire les atteintes neuro-meningees rencontrees chez des sideens en milieu definissant les caracteristiques epidemiologiques et les particularites clinique et paracliniques. Il- Methodologie : cette etude retrospective a porte sur les atteintes neuro-meningees au cours du SIDA. Elle a permis de repertorier 130 patients ayant sejourne dans le service de Option : Medecine interne du CHU de Treichville (Abidjan-RCI); grace a la classification de la CDC-OMS de 1987. L'etude a couvert la periode allant de juillet 1995 a Aout 2000. III- Resultats : De cette etude; il ressort que : les adultes jeunes de sexe feminin et de bas niveau socio-economique sont les plus atteintes.Le zona est l'antecedent le plus frequent chez ces patients 48;6 pour cent. En plus de l'alteration de l'etat general; de la fievre au long cour et du coma qui sont les motifs de consultation les plus frequents; les cephalees constituent les signes neuropsychiatriques les plus importants (66;9 pour cent). La raideur meningee represente l'atteinte du tonus musculaire le plus important (55;4 pour cent). Quoique les paresies et les paralysies aient domine les troubles de la motricite elles ne permettent pas de presager du siege des lesions encephaliques observees a la tomodensitometrie. Par ailleurs; nous avons note des signes d'atteintes radiculaires et cerebelleuses (5;4 pour cent); l'atteinte du nerf facial a represente la moitie de toutes les atteintes des paires craniennes. Les reactions immunologiques etaient importantes malgre la presence des lesions neurologiques (serologie toxoplasmique; hyperleucocytose...). La toxoplasmose cerebrale a ete l'affection opportuniste la plus frequente avec 51;5 pour cent des cas puis a suivi la cryptococcose neuro-meningee avec 17 pour cent des cas. Les ponctions lombaires realisees ont permis de mettre en evidence des liquides cephalo-rachidiens d'aspect clair avec hyperproteinorachie et hypoglycorachie a predominance lymphocytaire. L'evolution de ces patients s'est averee le plus souvent defavorable car le sejour moyen en hospitalisation etait de 2;9 semaines et la letalite a ete de 33;8 pour cent; au vu des conditions de travail de nos praticiens. IV-Conclusion : Cette etude nous a permis d'affirmer la gravite des atteintes neuro-meningees au cours de l'infection au VIH. D'ou la necessite d'une reelle mobilisation pour la lutte contre une telle pandemie

Acquired Immunodeficiency Syndrome , Acquired Immunodeficiency Syndrome/epidemiology , Cryptococcosis/epidemiology , HIV Infections/epidemiology